CN102369445A - Rolling bearing assembly with rotation sensing means, electric machine provided with such an assembly and fork lift truck comprising such an electric machine - Google Patents

Rolling bearing assembly with rotation sensing means, electric machine provided with such an assembly and fork lift truck comprising such an electric machine Download PDF

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Publication number
CN102369445A
CN102369445A CN2009801598147A CN200980159814A CN102369445A CN 102369445 A CN102369445 A CN 102369445A CN 2009801598147 A CN2009801598147 A CN 2009801598147A CN 200980159814 A CN200980159814 A CN 200980159814A CN 102369445 A CN102369445 A CN 102369445A
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China
Prior art keywords
track
rolling bearing
bearing assembly
conductor
wave filter
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CN2009801598147A
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CN102369445B (en
Inventor
F.尼亚菲克斯
G.范阿默龙根
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SKF AB
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SKF AB
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/08—Masts; Guides; Chains
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/245—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
    • G01D5/2451—Incremental encoders
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/443—Devices characterised by the use of electric or magnetic means for measuring angular speed mounted in bearings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/007—Encoders, e.g. parts with a plurality of alternating magnetic poles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2221/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Geology (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Manufacturing & Machinery (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Rolling Contact Bearings (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

This rolling bearing assembly (2) comprises a rolling bearing (4) with an inner ring (8), an outer ring (6) and several rolling bodies (10) between the inner and outer rings, at least one sensor (30) adapted to detect a rotation parameter of a first ring (8) with respect to a second ring (6) of the rolling bearing and a support member (40) holding the sensor (30) in position with respect to the rolling bearing (4). The support member (40) holds the sensor (30) in a position such that at least one connecting pin (34, 36, 38) of the sensor (30) extends in a volume (46) defined by the support member (40) and adapted to accommodate an electrical connector (100).

Description

Be with the rolling bearing assembly of rotation sensing mechanism, have the motor and V shape truck hoister of this assembly with this motor
Technical field
The present invention relates to a kind of rolling bearing assembly, this rolling bearing assembly comprises: except that other, in rotation with one of the ring of rolling bearing fastening coding packing ring; With the sensing mechanism that is applicable to the rotation parameter that detects this coding packing ring, this type sensing mechanism is connected to electronic circuit via cable.The invention still further relates to the electric rotary machine that is provided with this type rolling bearing assembly, and relate to the V shape truck hoister that comprises this type electric rotary machine.
Background technology
Rolling bearing comprises interior ring, outer shroud and is assemblied in a plurality of rolling bodys between these two rings.These rolling bodys can be ball, roller or needle roller.In connotation of the present invention, rolling bearing can be for example ball bearing, roller bearing or needle bearing.
In the rolling bearing field, the known rotational speed of utilizing velocity gauge to confirm the member that rolling bearing supported.For example, the truck hoister is equipped with motor so that the crotch of said truck moves up or down.The position of said crotch and speed are because security reason must be controlled.In this case, knownly utilize instrumented rolling bearing assembly to come some information about the rotation parameter of said turning axle to be provided with respect to the turning axle of rack support motor and for variable-voltage regulator.
The instrumented rolling bearing assembly of this type comprises: with the electronic unit sensor of the form of Hall effect element for example, and some other the electronic unit that possibly be used for the processing of this type signal of sensor.This type of electrical component is in by in the electromagnetic environment that stator influenced of for example motor.And, electronics fast transient phenomenon (electronic fast transient phenomenon) or " EFT " occur in this type machinery, this type phenomenon is damaged electronic unit, particularly sensor probably.For example, in the instance of V shape truck hoister, can electrostatic electrification when this truck moves on plastics ground, therefore when it, can take place to discharge fast for example during metal frame near the conducting element of ground connection, this possibly damage electronic unit.
This type electromagnetism fast transient phenomenon (electromagnetic fast transient phenomenon) or " EFT " at present through being taken into account with the electronic unit of protection rotation sensing mechanism at the other electronic filter that combines of the electronic unit of sensor or rolling bearing assembly.This type wave filter is big volume and cumulative volume that increase rolling bearing assembly, to such an extent as to it possibly hinder the use of this rolling bearing assembly in some situations.In some instances, the size of said electronic filter is reduced cooperating with the rolling bearing assembly of minor diameter, but in this type instance, said electronic filter is not effectively real.
On the other hand, knownly for example know, utilize electromagnetic interface filter as the noise filter that is used to eliminate high frequency noise by EP-A-1 211 500.This type wave filter is not suitable for EFT and increases the cumulative volume of bearing assembly.
Summary of the invention
The objective of the invention is to utilize a kind of new rolling bearing assembly to solve above-mentioned these problems, said new rolling bearing assembly is compact and is avoided electromagnetism fast transient phenomenon (electromagnetic fast transient phenomenons) or " EFT " by protection effectively.
So far, the present invention relates to a kind of rolling bearing assembly, comprising: rolling bearing with interior ring, outer shroud and the rolling body between said inner and outer ring; In rotation, encircle fastening coding packing ring with first of said inner and outer ring; In rotation, encircle fastening sensing mechanism with second of said inner and outer ring, said sensing mechanism is applicable to the rotation parameter that detects said coding packing ring; With the cable with first end and second end, said first end is connected to said sensing mechanism, and said second end is applicable to and is connected to electronic circuit.According to the present invention, the wave filter that the transient voltage that is used for causing because of electromagnetism fast transient phenomenon vibrates is installed in said cable, between its first end and second end.
Because the present invention; The said wave filter that is used for the transient voltage vibration is protected the for example electric component of said sensor of said sensing mechanism effectively; Because it is installed on the said cable; Said rolling bearing one segment distance of distance, this makes the direct environment of said wave filter and said rolling bearing that mechanical interference not take place, so do not increase the size of said rolling bearing basically.Because said wave filter is between first end and second end of said cable; So it reserves free to hold the connector of any kind for second end of said cable; The electronic circuit that particularly will be connected to based on cable and the connector selected, for example variable-voltage regulator.Being installed in can the be compact and electric circumstance that be based on said rolling bearing assembly of the said connector at the second end place of said cable selects.
Element is the characterization parameter of pivoting action with respect to the rotation parameter of another element.This type parameter can be the central axis around said rolling bearing, the angle that part of measurement is located with respect to the angular of another part.This type parameter also can be speed, displacement, acceleration or vibration.
According to of the present invention favourable and optional other aspect, the following characteristic that said rolling bearing assembly can combine to take with any technical permissible structure one or more:
Second end of-said cable is equipped with the connector that is used for it and is connected to electronic circuit.Advantageously, this connector does not comprise any electronic filtering device.
-said wave filter comprises a plurality of electronic units except that diode.
-said wave filter is the RC circuit that is used for low-frequency channel at least.
-said cable has four conductors; First conductor transmits positive electricity and is pressed onto said sensing mechanism; Second conductor transmits negative electricity and is pressed onto said sensing mechanism; The 3rd conductor and the 4th conductor transmit the output signal of said sensing mechanism; And said wave filter comprises and engages said first, second, third and the first of the 4th conductor and the first, second, third and the 4th track of second portion respectively that each track of said first, third and fourth track has the resistance of series connection and is connected to second track through at least two parallel lines; Each bar line of said at least two parallel lines has the electric capacity of series connection, and two electric capacity that one of said the first, the 3rd or the 4th track are connected to two lines of said second track have different values.
-among two electric capacity of said two lines that one of said the first, the 3rd or the 4th track are connected to said second track, first electric capacity has the value between 0.5nF and the 5nF, and second electric capacity of said electric capacity has the value between 2nF and the 60nF.
-said cable has four conductors; Wherein first conductor transmits positive electricity and is pressed onto said sensing mechanism; Second conductor transmits negative electricity and is pressed onto said sensing mechanism; The 3rd conductor and the 4th conductor transmit the output signal of said sensing mechanism; And; Said wave filter comprises and engages said first, second, third and the first of the 4th conductor and the first, second, third and the 4th track of second portion respectively; Each track of said first, third and fourth track has the resistance of series connection and is connected to said second track through at least two parallel lines, and the said line that said first track is connected to said second track respectively has the electric capacity of series connection, and two lines that said third and fourth track is connected to said second track are had being used for said first-line electric capacity and being used for said second-line one group of two back-to-back Zener diode of series connection respectively.
-the resistance that in series is installed on each track of said first, third and fourth track has the value between 20 Ω and 60 Ω.
-said first track has of the ferrite bean of series connection and the 3rd electric capacity through having series connection and three-wayly is connected to said second track.This 3rd electric capacity advantageously has the value between 100nF and the 1000nF.
-form said wave filter electronic unit based on the characteristic electron of the conductor of said cable and said cable respectively between between said first end and the said wave filter and the length between said wave filter and said second end and selecting.
-said wave filter is contained in the protectiveness housing.In this type situation, and when second end of said cable was provided with connector, said connector and said housing advantageously had circular cross section, and the maximum gauge of said housing is less than or equal to the maximum gauge of said connector.
The invention still further relates to a kind of electric rotary machine, this electric rotary machine comprises: except that other, and frame, stator, axle and be installed in the rotor on the said axle, wherein, said axle is by being supported with respect to said frame like above-mentioned rolling bearing assembly.This type electric rotary machine is protected effectively and avoids EFT, and allows the position of the turning axle that detects it.
At last, the present invention relates to a kind of V shape truck hoister that comprises at least one this type electric rotary machine.This type truck promotes function and is operated under the abominable electromagnetism situation, utilizes feedback signal to control the actuating of some electric rotary machines on the frame that is installed in it simultaneously.
Description of drawings
Based on consistent with accompanying drawing and as examples shown and unrestricted the object of the invention and the following description that provides, the present invention will be better understood.In the accompanying drawings:
Fig. 1 is the schematic views according to truck hoister of the present invention,
Fig. 2 is motor and the schematic views of related variable-voltage regulator that is used for the V shape truck hoister of Fig. 1,
Fig. 3 is the semisectional view along the vast scale of the line III-III among Fig. 2,
Fig. 4 is the zoomed-in view of the details IV-IV on Fig. 2,
Fig. 5 is the decomposition diagram according to rolling bearing assembly of the present invention that the electric rotary machine with Fig. 2 uses,
Fig. 6 is the electrical schematic diagram of EFT wave filter of the rolling bearing assembly of Fig. 5,
Fig. 7 is the electrical schematic diagram that is similar to Fig. 6, for being used for the EFT wave filter of the second embodiment of the present invention.
Embodiment
Truck hoister 1 shown in Figure 1 comprises the mast (mast) 2 that is provided with in order to the crotch 4 that promotes load 6.Direct current generator 10 is used for driving crotch 4 along mast 2.Motor 10 has frame 12, and this frame 12 is held stator 14 and supported the rotatable axle 16 that is equipped with rotor 18.Axle 16 is by unshowned mechanism chain and be mechanically connected to crotch 4 for example.
Axle 16 is supported via the rolling bearing assembly that comprises rolling bearing 22 20 by frame 12; Said rolling bearing comprises: the interior radially surface that interior ring 24, outer shroud 26, a plurality of ball 28 and said ball remained on the retainer 30 in the rolling chamber, said rolling chamber radially are limited to ring 26 with encircle between 24 the outer radial face.
X 20The central axis of expression rolling bearing assembly 20, said central axis are ring 24 and 26 rotations relative to each other.In this explanation, word " axial ", " radially ", " axially " and " radially " relate to axis X 20When direction was parallel to this axis, it was " axial "; When direction perpendicular to and when being tangential to this axis, it is " radially ".
As shown in Figure 3, interior ring 24 is engaged on the axle 16 and axle is fastening therewith in rotation, and outer shroud 26 is immobilized in frame 12 formed recesses 122.
Comprise on the outer radial face of ring 24 in for example the coding packing ring 32 of two permanent magnets is fixedly mounted in, make it and part 16 and 24 around axis X 20Rotation.
Gasket seal 38 is installed on the outer shroud 26 and inwardly encircles 24 and extend, and is in a side that is opposed to coding packing ring 32 of these rings.
Sensor 40 is the form of two Hall effect detecting elements in a preferred embodiment of the invention, is installed to the next door of coding packing ring 32, makes to work as coding packing ring 32 around axis X 20It can detect the variation in magnetic field during rotation.Sensor 40 is installed on the annular support member 42 that keeps unshowned printed circuit board (PCB), and said printed circuit board (PCB) has and is applicable to sensor 40 and presents electric current and transmission and/or handle the electronic unit of this signal of sensor.
Supporting member 42 is installed packing ring 46 via elasticity and is fixedly mounted on the outer shroud 26, makes sensor 40 be held on the throne with respect to outer shroud 26.
Cable 50 is connected to said printed circuit board (PCB), and supporting member 40 stretches out form to receive and to keep the socket (socket) 44 of first end 52 of cable 50 partly.
Fig. 6 illustrates the general shape of packing ring 46.Packing ring 46 radially surrounds supporting member 42, but is used for the angle type sector (angular sector) corresponding to socket 44.
In order to simplify, said printed circuit board (PCB) does not illustrate at Fig. 3, and is shown in dotted line being connected via said printed circuit board (PCB) between sensor 40 and the cable end 52.
Second end 54 of cable 50 is provided with and is applicable to the connector 60 that matches with the corresponding connector 70 at the place, end that is installed in connecting line 80, and said connecting line 80 is presented by the signal S of sensor 40 via the electronic unit transmission of association for variable-voltage regulator 90 40Variable-voltage regulator 90 is presented electric current via second connecting line 100 for motor 10.In other words, variable-voltage regulator 90 can consider to comprise the output signal S of the sensing mechanism of sensor 40 40With control motor 10.
Wave filter 200 is arranged on the cable 50, the midway between its end 52 and 54, and the sensing mechanism, particularly sensor 40 that are supported with protection supporting member 42 avoid electromagnetism fast transient or EFT phenomenon.
L 1The length of expression cable 50 between socket 44 and EFT wave filter 200, and L 2The length of expression cable 50 between EFT wave filter 200 and connector 60.Since mechanical reason, length L 1Greater than 10cm, be preferably greater than 15cm.Yet, owing to electric reason, L 1Preferably less than 50cm.In fact, wave filter is far away more from the sensing electronics that will protect, and the effectiveness of this wave filter is just low more.Wave filter 200 can be positioned at from rolling bearing 22 and axle 16 1 distance, makes it directly not interfere motor 10.On the other hand, be used for the opening 302 that cable 50 passes through, length L in order to pass in the inwall 300 that is arranged on truck hoister 1 2Greater than 10cm, be preferably greater than 15cm, this is enough to remain the assembly power supply that part 50,60 and 200 is constituted.
EFT wave filter 200 comprises printed circuit board (PCB) or PCB 202 and the plastic casing 204 with circular cross section.D 204The maximum gauge of expression housing 204.
Cable 50 comprises four electric conductors 501,502,503 and 504.Electric conductor 501 positive voltage of self tuning regulator 90 in the future is sent to the sensing mechanism that supporting member 42 is supported, and the negative current of conductor self tuning regulator 90 in 502 future is sent to identical sensing mechanism.Conductor 503 and 504 output signal S to regulator 90 transmission sensing mechanisms 40Conductor 501 to 504 is cut off at the height place of wave filter 200, and eight join domain Z are set on PCB 202 1To Z 4And Z ' 1To Z ' 4Be used for conductor 501 to 504 lay respectively between first end 52 and the EFT wave filter 200 and second end 54 and EFT wave filter 200 between being connected of first and second portion.
First track 601 extends on the PCB 202, at join domain Z 1, Z ' 1Between, be used for the first and the second portion of bonded conductor 501.Similarly, conductive traces 602,603 and 604 extends on the PCB 202 respectively, at join domain Z 2And Z ' 2, Z 3And Z ' 3, Z 4And Z ' 4Between, be used for the first and the second portion of bonded conductor 502,503 and 504.
First resistance R 1With ferrite bean FB 1In series be installed on the track 601.The second and the 3rd resistance R 2And R 3Be installed in series respectively on track 603 and 604.Resistance R 1, R 2And R 3Has the identical value between 20 Ω and 60 Ω, preferably in the grade of 50 Ω.
Track 601 is connected to track 602 through three parallel conductor wires 701,702 and 703, and every line 701,702 and 703 is equipped with series capacitance C respectively 1, C 2And C 3If consider to flow to from regulator 90 electric current of the sensing mechanism that is supported by member 42, then line 702 extends between track 601 and 602 at ferrite bean FB 1And resistance R 1The upper reaches, and line 701 and 703 extends between these tracks at R 1And FB 1Downstream.
Track 603 passes through in resistance R 2Two parallel connecting lines 801 of both sides be connected with 802, line 801 and 802 every line are equipped with series capacitance C ' respectively 1And C ' 2
Similarly, two parallel connecting lines 901 of the both sides of track 604 through being distributed in resistance R 3 and 902 are connected to track 602, and connecting line 901 and 902 has series capacitance C separately respectively " 1And C " 2
In order to simplify, electronic unit is not shown in Fig. 4.
Capacitor C 1, C ' 1And C " 1Value be equate and the scope between 0.5nF and 5nF in select.For example, capacitor C 1, C ' 1And C ' 2Value can be 1nF.Similarly, capacitor C 2, C ' 2And C " 2Value be equate and the scope between 2nF and 60nF in select.For example, capacitor C 2, C ' 2, C " 2Value can be about 50nF.Capacitor C 3Value be capacitor C 2Ten times of value, about 500nF for example.C 2And C 3Capacitance select based on a plurality of parameters, said parameter mainly is that length, connector 60 and the voltage that is delivered to wave filter of technology, the cable 50 of sensor 40 is supplied with U.Voltage is supplied with U can have the value between 5V and the 40V; It is generally 12V or 24V.
Because the structure and the configuration of EFT wave filter 200, it prevents effectively that electromagnetism fast transient phenomenon causes in the sensing mechanism that member 42 is supported and possibly damage the particularly transient voltage vibration of sensor 40 of these sensing mechanisms.
Electronic circuit shown in Figure 6 can be considered to be used to merely be lower than the RC circuit of the low-frequency current of 20MHz.Ferrite bean FB 1Increase the series impedance of about 50 Ω that are used for the EFT frequency, said EFT frequency is between 20MHz and the 100MHz.Capacitor C 2, C ' 2And C " 2Restriction difference transient voltage in the EFT phenomenon, and capacitor C 1, C ' 1And C " 1The transient state that prevents common pattern becomes difference modes.And, capacitor C 3For high frequency improves said fast transient effect.
In other words, the wave filter 200 that does not comprise any diode is exclusively used in the protection sensing mechanism and avoids EFT, and it is different from ferrite core basically, and said ferrite core is installed in voltage sometimes and supplies with on the cable and avoid surge voltage with the protection electronic unit.
Electronic unit R 1-R 3, C 1-C 3, C ' 1, C ' 2, C " 1, C " 2And FB 1Be selected to and form wave filter 200, take into account simultaneously except that depending on length L other 1And L 2Conductor 501 and 504 the first and the electrical specification of second portion.In other words, wave filter 200 arrives the selection of its parts along the position influence of cable 50.
Connector 60 has substantial mechanical function, that is, the end of conductor 501 to 504 remained connected to be applicable to the plug 62 that matches with the corresponding plug of connector 70.
Particularly, no electronic unit embeds to constitute wave filter in connector 60, and the said filtering of feasible antagonism EFT or defencive function are independent of connector 60 and carry out.This shows that connector 60 can be any kind that is applicable to connector 70.If rolling bearing assembly 20 is sold to V shape truck hoister and makes company, then connector 60 can be selected based on the shape of connector 70 by this company, and is independent of the protection that avoids EFT to sensing mechanism.With regard to the consistance of the connector that is used for a kind of application, this is favourable, the manufacturing of said application examples such as truck hoister 1.
D 60The maximum gauge of expression connector 60.PCB 202 and housing 204 are with diameter D 204Be less than or equal to diameter D 60This mode design, make that in the manufacturing of truck hoister 1 connector 60 can pass identical opening 302 to be connected to connecting line 90 with wave filter 200.In other words; Because connector 60 and wave filter 200 are not big volumes; So they can easily be positioned within the truck hoister 1; And as long as opening 302 is enough greatly to hold connector 60, then wave filter 200 does not hinder the circulation (circulation) of the cable 50 in the truck hoister 1.
In the second embodiment of the present invention shown in Fig. 7 part, has identical Reference numeral with identical element among first embodiment.Hereinafter is only described the difference between this embodiment and the last embodiment.Unless otherwise mentioned, electronic unit shown in Figure 7 is same as the electronic unit of the identical Reference numeral of having of Fig. 6.
In this embodiment, connecting line 802 and 902 is provided with two groups of S ' respectively 2And S " 2Back-to-back Zener diode ZD AAnd ZD BThis modification with respect to the embodiment of Fig. 6 has been considered the following fact, that is, be connected between conductor 503 and 501 respectively and pull-up resistor between conductor 504 and 501 or pull-up resistor RL 3And RL 4Can have high relatively value, for example 2,2k Ω and 2 is in the scope between the 8k Ω.Use Zener diode group S ' 2And S " 2Even, pull-up resistor RL 3And RL 4Have high relatively value, also allow the output signal S of sensor 40 40Remain significant value.It should be noted that because these pull-up resistors can be combined in electronic control unit for example in the variable-voltage regulator 90 of Fig. 1, so the fabricator of rolling bearing assembly 20 can not exert an influence to their value at this.Therefore, wave filter 200 must adopt high value pull-up resistor RL at least in some cases 3And RL 4
The invention is not restricted to the bearing assembly of Hall effect element as sensor.The sensor of any kind of output electric signal all can use.
According to a unshowned embodiment of the present invention, said sensor can be in rotation with said in ring fastening, and said coding packing ring and said outer shroud are fastening.
More than invention has been described in the situation that the motor of V shape truck hoister uses in the present invention.Other application can for example steering, belt conveyer or grinding roller be considered with the electric rotating machine of any kind.Particularly, the electric rotary machine of other type, for example generator can be equipped with like above-mentioned rolling bearing assembly.

Claims (16)

1. a rolling bearing assembly (20) comprising:
-have a rolling bearing (22) of interior ring (24), outer shroud (26) and the rolling body between said inner and outer ring (28),
-in rotation, encircle (24) fastening coding packing ring (32) with first of said inner and outer ring,
-in rotation with second ring (26) fastening sensing mechanism (44) of said inner and outer ring, said sensing mechanism be applicable to the rotation parameter that detects said coding packing ring (32) and
-having the cable (50) of first end (52) and second end (54), said first end (52) is connected to said sensing mechanism, and said second end (54) is applicable to and is connected to electronic circuit (30),
Wherein, the wave filter (200) that the transient voltage that is used for causing because of electromagnetism fast transient phenomenon (EFT) vibrates is installed in said cable (50), between its first end and second end (52,54).
2. rolling bearing assembly as claimed in claim 1, wherein, said second end (54) of said cable is equipped with the connector (60) that is used for it and is connected to electronic circuit (90).
3. rolling bearing assembly as claimed in claim 2, wherein, said connector (60) does not comprise any electronic filtering device.
4. like each described rolling bearing assembly of aforementioned claim, wherein, said wave filter (200) comprises a plurality of electronic unit (R except that diode 1-R 3, C 1-C 3, C ' 1, C ' 2, C " 1, C " 2, FB 1).
5. rolling bearing assembly as claimed in claim 4, wherein, said wave filter forms the RC circuit that is used for low-frequency current at least.
6. like each described rolling bearing assembly of aforementioned claim, wherein, said cable (50) has four conductors (501,502; 503,504), wherein first conductor (501) transmits positive voltage (U) to said sensing mechanism (40), and second conductor (502) transmits negative electricity and is pressed onto said sensing mechanism; The 3rd conductor (503) and the 4th conductor (504) transmit the output signal of said sensing mechanism, and wherein said wave filter (200) comprises and engages said first, second, third and the first of the 4th conductor and the first, second, third and the 4th track (601,602,603 of second portion respectively; 604), each track of said first, third and fourth track have the resistance of series connection (R1, R2 is R3) and through at least two parallel lines (701-703; 801,802,901; 902) be connected to second track (602), said at least two parallel lines (701-703,801; 802,901,902) each bar line has series capacitance (C 1-C 3, C ' 1, C ' 2, C " 1, C " 2), two electric capacity that one of said the first, the 3rd or the 4th track are connected to two lines of said second track have different values.
7. rolling bearing assembly as claimed in claim 6, wherein, with said the first, the 3rd or the 4th track (601,603; 604) one of be connected to said two lines (701-703,801,802 of said second track (602); 901,903) among two electric capacity, the first electric capacity (C 1, C ' 1, C " 1) have the value between 0.5nF and the 5nF, and the second electric capacity (C of said electric capacity 2, C ' 2, C " 2) have a value between 2nF and the 60nF.
8. like each described rolling bearing assembly of claim 1 to 5, wherein, said cable (50) has four conductors (501; 502,503,504); Wherein first conductor (501) transmits positive voltage (U) to said sensing mechanism (40); Second conductor (502) transmits negative electricity and is pressed onto said sensing mechanism, the output signal of the 3rd conductor (503) and the said sensing mechanism of the 4th conductor (504) transmission, and wherein said wave filter (200) comprises and engages said first, second, third and the first of the 4th conductor and the first, second, third and the 4th track (601 of second portion respectively; 602; 603,604), each track of said first, third and fourth track has the resistance (R of series connection 1, R 2, R 3) and being connected to said second track (602) through at least two parallel lines (701-703,801,802,901,902), the said line (701-703) that said first track (601) is connected to said second track (602) respectively has the electric capacity (C of series connection 1-C 3), and with two lines (801,802,901,902) that said third and fourth track (603,604) is connected to said second track (602) have respectively series connection the electric capacity that is used for said first line (801,901) (C ' 1, C " 1) and be used for one group of said second line (802,902) (S ' 2, S " 2) two back-to-back Zener diode (ZD A, ZD B).
9. like each described rolling bearing assembly of claim 6 to 8, wherein, in series be installed in the resistance (R on each track of said first, third and fourth track (601,603,604) 1, R 2, R 3) have a value between 20 Ω and 60 Ω.
10. like each described rolling bearing assembly of claim 6 to 9, wherein, said first track (601) has the ferrite bean (FB of series connection 1) and through having the 3rd electric capacity (C of series connection 3) three-way (703) be connected to said second track (602).
11. rolling bearing assembly as claimed in claim 10, wherein, said the 3rd electric capacity (C 3) have a value between 100nF and the 1000nF.
12. each the described rolling bearing assembly like aforementioned claim wherein, forms the electronic unit (R of said wave filter 1-R 3, C 1-C 3, C ' 1, C ' 2, C " 1, C " 2, FB 1) based on the characteristic electron of the conductor (501-504) of said cable (50) and said cable (50) respectively between between said first end (52) and the said wave filter (200) and the length (L between said wave filter and said second end (54) 1, L 2) and select.
13. like each described rolling bearing assembly of aforementioned claim, wherein, said wave filter (200) is contained in the protectiveness housing (204).
14. like claim 2 and 13 described rolling bearing assemblies, wherein, said connector (60) and said housing (204) have circular cross section, and the maximum gauge (D of said housing 204) be less than or equal to the maximum gauge (D of said connector 60).
A 15. electric rotary machine (10); Comprise: frame (12), stator (14), axle (16) and the rotor (18) that is installed on said; Wherein, said axle is supported with respect to said frame by each the described rolling bearing assembly (20) according to aforementioned claim.
16. a V shape truck hoister (1) comprises at least one electric rotary machine as claimed in claim 15 (10).
CN200980159814.7A 2009-06-12 2009-06-12 Rolling bearing assembly with rotation sensing means, electric machine provided with such an assembly and fork lift truck comprising such an electric machine Active CN102369445B (en)

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JP5306540B2 (en) 2013-10-02
WO2010143022A1 (en) 2010-12-16
CN102369445B (en) 2015-03-04
US20120086313A1 (en) 2012-04-12
EP2440943A1 (en) 2012-04-18
US9227823B2 (en) 2016-01-05
JP2012529646A (en) 2012-11-22

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